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Matrix question what is the strategy.. In multiplying matrix is P=AB is equal to the P =BA..?

Matrix question what is the strategy.. In multiplying matrix is P=AB is equal to the P =BA..?

Question Image
Grade:11

1 Answers

Arun
25763 Points
3 years ago
Dear Kriti
in 2 X 2 matrix
|P| =  – 1
for inverse
A11 and A22 are interchanged as it is.
but A21 and A12 are interchanged with reverse sign
Hence inverse of P = (1 / –1) [ – 3     – 5]
– 2    – 3
 
 

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